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http://dx.doi.org/10.5322/JES.2009.18.11.1225

Application of the Central Composite Design and Response Surface Methodology to the Treatment of Dye Using Electrochemical Oxidation  

Kim, Dong-Seog (Department of Environmental Science, Catholic University of Daegu)
Park, Young-Seek (Department of Health & Environment, Daegu University)
Publication Information
Journal of Environmental Science International / v.18, no.11, 2009 , pp. 1225-1234 More about this Journal
Abstract
The aim of this research was to apply experimental design methodology in the optimization condition of electrochemical oxidation of Rhodamine B(RhB). The reactions of electrochemical oxidation were mathematically described as a function of parameters amounts of current, NaCl dosage, pH and time being modeled by the use of the central composite design, which was used for fitting quadratic response surface model. The application of response surface methodology using central composite design(CCD) technique yielded the following regression equation, which is an empirical relationship between the removal efficiency of RhB and test variable in actual variables: RhB removal (%) = 3.977 + 23.279$\cdot$Current + 49.124$\cdot$NaCI - 5.539$\cdot$pH - 8.863$\cdot$time - 22.710$\cdot$Current$\cdot$NaCl + 5.409$\cdot$Current$\cdot$time + 2.390$\cdot$NaCl$\cdot$time + 1.061$\cdot$pH$\cdot$time - $0.570{\cdot}time^2$. The model predicted also agree with the experimentally observed result($R^2$ = 91.9%).
Keywords
Response surface methodology(RSM); Electrochemical oxidation; Central Composite Design(CCD); Analysis of variance(ANOVA); Dye; Optimization;
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Times Cited By KSCI : 6  (Citation Analysis)
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